Re: CVS commit: src/tests/net/icmp

[Thomas Klausner <wiz%NetBSD.org@localhost>]

[redirected from source-changes-d to a hopefully more suitable mailing
list]

On Mon, Jul 05, 2010 at 12:26:17AM +0300, Antti Kantee wrote:
> I'm happy to give a more detailed explanation on how it works, but I need
> one or two questions to determine the place where I should start from.
> I'm planning a short article on the unique advantages of rump in kernel
> testing (four advantages by my counts so far), and some questions now
> might even help me write that one about what people want to read instead
> of what I guess they'd want to read.

I looked at the tests some more (tmpfs race, and the interface one
from above). I think I can read them, but am unclear on some of the
basic properties of a rump kernel.

For example:
1. Where is '/'? Does it have any relation to the host systems '/'? Is
it completely virtual in the memory of the rump kernel?
2. Do I understand correctly that for e.g. copying a file from the
host file system into a rump kernel file system, I would use read and
rump_sys_write?
3. Similarly for network interfaces -- open a socket with socket(2) or
rump_socket(or so) and copy bytes with read/rump_sys_write?
4. Could you NFS export the rump kernel file system to the host?
(Probably better to a second rump kernel...)
5. I think I read that rump (or some other part) can now talk USB. How
would one attach a USB device on the host system to a USB controller
inside the rump kernel?

Is that a good start for questions? :)
 Thomas